?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
If a mouse position was above the maximum supported by the normal mouse
[tmux-openbsd.git] / window.c
blobf14c3bc7efbf39c316ab3c9043bad5c3e32f4919
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20 #include <sys/ioctl.h>
21
22 #include <ctype.h>
23 #include <errno.h>
24 #include <fcntl.h>
25 #include <fnmatch.h>
26 #include <regex.h>
27 #include <signal.h>
28 #include <stdint.h>
29 #include <stdlib.h>
30 #include <string.h>
31 #include <time.h>
32 #include <unistd.h>
33 #include <util.h>
34 #include <vis.h>
35
36 #include "tmux.h"
37
38 /*
39 * Each window is attached to a number of panes, each of which is a pty. This
40 * file contains code to handle them.
41 *
42 * A pane has two buffers attached, these are filled and emptied by the main
43 * server poll loop. Output data is received from pty's in screen format,
44 * translated and returned as a series of escape sequences and strings via
45 * input_parse (in input.c). Input data is received as key codes and written
46 * directly via input_key.
47 *
48 * Each pane also has a "virtual" screen (screen.c) which contains the current
49 * state and is redisplayed when the window is reattached to a client.
50 *
51 * Windows are stored directly on a global array and wrapped in any number of
52 * winlink structs to be linked onto local session RB trees. A reference count
53 * is maintained and a window removed from the global list and destroyed when
54 * it reaches zero.
55 */
56
57 /* Global window list. */
58 struct windows windows;
59
60 /* Global panes tree. */
61 struct window_pane_tree all_window_panes;
62 static u_int next_window_pane_id;
63 static u_int next_window_id;
64 static u_int next_active_point;
65
66 struct window_pane_input_data {
67 struct cmdq_item *item;
68 u_int wp;
69 };
70
71 static struct window_pane *window_pane_create(struct window *, u_int, u_int,
72 u_int);
73 static void window_pane_destroy(struct window_pane *);
74
75 RB_GENERATE(windows, window, entry, window_cmp);
76 RB_GENERATE(winlinks, winlink, entry, winlink_cmp);
77 RB_GENERATE(window_pane_tree, window_pane, tree_entry, window_pane_cmp);
78
79 int
80 window_cmp(struct window *w1, struct window *w2)
81 {
82 return (w1->id - w2->id);
83 }
84
85 int
86 winlink_cmp(struct winlink *wl1, struct winlink *wl2)
87 {
88 return (wl1->idx - wl2->idx);
89 }
90
91 int
92 window_pane_cmp(struct window_pane *wp1, struct window_pane *wp2)
93 {
94 return (wp1->id - wp2->id);
95 }
96
97 struct winlink *
98 winlink_find_by_window(struct winlinks *wwl, struct window *w)
99 {
100 struct winlink *wl;
101
102 RB_FOREACH(wl, winlinks, wwl) {
103 if (wl->window == w)
104 return (wl);
105 }
106
107 return (NULL);
108 }
109
110 struct winlink *
111 winlink_find_by_index(struct winlinks *wwl, int idx)
112 {
113 struct winlink wl;
114
115 if (idx < 0)
116 fatalx("bad index");
117
118 wl.idx = idx;
119 return (RB_FIND(winlinks, wwl, &wl));
120 }
121
122 struct winlink *
123 winlink_find_by_window_id(struct winlinks *wwl, u_int id)
124 {
125 struct winlink *wl;
126
127 RB_FOREACH(wl, winlinks, wwl) {
128 if (wl->window->id == id)
129 return (wl);
130 }
131 return (NULL);
132 }
133
134 static int
135 winlink_next_index(struct winlinks *wwl, int idx)
136 {
137 int i;
138
139 i = idx;
140 do {
141 if (winlink_find_by_index(wwl, i) == NULL)
142 return (i);
143 if (i == INT_MAX)
144 i = 0;
145 else
146 i++;
147 } while (i != idx);
148 return (-1);
149 }
150
151 u_int
152 winlink_count(struct winlinks *wwl)
153 {
154 struct winlink *wl;
155 u_int n;
156
157 n = 0;
158 RB_FOREACH(wl, winlinks, wwl)
159 n++;
160
161 return (n);
162 }
163
164 struct winlink *
165 winlink_add(struct winlinks *wwl, int idx)
166 {
167 struct winlink *wl;
168
169 if (idx < 0) {
170 if ((idx = winlink_next_index(wwl, -idx - 1)) == -1)
171 return (NULL);
172 } else if (winlink_find_by_index(wwl, idx) != NULL)
173 return (NULL);
174
175 wl = xcalloc(1, sizeof *wl);
176 wl->idx = idx;
177 RB_INSERT(winlinks, wwl, wl);
178
179 return (wl);
180 }
181
182 void
183 winlink_set_window(struct winlink *wl, struct window *w)
184 {
185 if (wl->window != NULL) {
186 TAILQ_REMOVE(&wl->window->winlinks, wl, wentry);
187 window_remove_ref(wl->window, __func__);
188 }
189 TAILQ_INSERT_TAIL(&w->winlinks, wl, wentry);
190 wl->window = w;
191 window_add_ref(w, __func__);
192 }
193
194 void
195 winlink_remove(struct winlinks *wwl, struct winlink *wl)
196 {
197 struct window *w = wl->window;
198
199 if (w != NULL) {
200 TAILQ_REMOVE(&w->winlinks, wl, wentry);
201 window_remove_ref(w, __func__);
202 }
203
204 RB_REMOVE(winlinks, wwl, wl);
205 free(wl);
206 }
207
208 struct winlink *
209 winlink_next(struct winlink *wl)
210 {
211 return (RB_NEXT(winlinks, wwl, wl));
212 }
213
214 struct winlink *
215 winlink_previous(struct winlink *wl)
216 {
217 return (RB_PREV(winlinks, wwl, wl));
218 }
219
220 struct winlink *
221 winlink_next_by_number(struct winlink *wl, struct session *s, int n)
222 {
223 for (; n > 0; n--) {
224 if ((wl = RB_NEXT(winlinks, wwl, wl)) == NULL)
225 wl = RB_MIN(winlinks, &s->windows);
226 }
227
228 return (wl);
229 }
230
231 struct winlink *
232 winlink_previous_by_number(struct winlink *wl, struct session *s, int n)
233 {
234 for (; n > 0; n--) {
235 if ((wl = RB_PREV(winlinks, wwl, wl)) == NULL)
236 wl = RB_MAX(winlinks, &s->windows);
237 }
238
239 return (wl);
240 }
241
242 void
243 winlink_stack_push(struct winlink_stack *stack, struct winlink *wl)
244 {
245 if (wl == NULL)
246 return;
247
248 winlink_stack_remove(stack, wl);
249 TAILQ_INSERT_HEAD(stack, wl, sentry);
250 }
251
252 void
253 winlink_stack_remove(struct winlink_stack *stack, struct winlink *wl)
254 {
255 struct winlink *wl2;
256
257 if (wl == NULL)
258 return;
259
260 TAILQ_FOREACH(wl2, stack, sentry) {
261 if (wl2 == wl) {
262 TAILQ_REMOVE(stack, wl, sentry);
263 return;
264 }
265 }
266 }
267
268 struct window *
269 window_find_by_id_str(const char *s)
270 {
271 const char *errstr;
272 u_int id;
273
274 if (*s != '@')
275 return (NULL);
276
277 id = strtonum(s + 1, 0, UINT_MAX, &errstr);
278 if (errstr != NULL)
279 return (NULL);
280 return (window_find_by_id(id));
281 }
282
283 struct window *
284 window_find_by_id(u_int id)
285 {
286 struct window w;
287
288 w.id = id;
289 return (RB_FIND(windows, &windows, &w));
290 }
291
292 void
293 window_update_activity(struct window *w)
294 {
295 gettimeofday(&w->activity_time, NULL);
296 alerts_queue(w, WINDOW_ACTIVITY);
297 }
298
299 struct window *
300 window_create(u_int sx, u_int sy, u_int xpixel, u_int ypixel)
301 {
302 struct window *w;
303
304 if (xpixel == 0)
305 xpixel = DEFAULT_XPIXEL;
306 if (ypixel == 0)
307 ypixel = DEFAULT_YPIXEL;
308
309 w = xcalloc(1, sizeof *w);
310 w->name = xstrdup("");
311 w->flags = 0;
312
313 TAILQ_INIT(&w->panes);
314 w->active = NULL;
315
316 w->lastlayout = -1;
317 w->layout_root = NULL;
318
319 w->sx = sx;
320 w->sy = sy;
321 w->manual_sx = sx;
322 w->manual_sy = sy;
323 w->xpixel = xpixel;
324 w->ypixel = ypixel;
325
326 w->options = options_create(global_w_options);
327
328 w->references = 0;
329 TAILQ_INIT(&w->winlinks);
330
331 w->id = next_window_id++;
332 RB_INSERT(windows, &windows, w);
333
334 window_set_fill_character(w);
335 window_update_activity(w);
336
337 log_debug("%s: @%u create %ux%u (%ux%u)", __func__, w->id, sx, sy,
338 w->xpixel, w->ypixel);
339 return (w);
340 }
341
342 static void
343 window_destroy(struct window *w)
344 {
345 log_debug("window @%u destroyed (%d references)", w->id, w->references);
346
347 RB_REMOVE(windows, &windows, w);
348
349 if (w->layout_root != NULL)
350 layout_free_cell(w->layout_root);
351 if (w->saved_layout_root != NULL)
352 layout_free_cell(w->saved_layout_root);
353 free(w->old_layout);
354
355 window_destroy_panes(w);
356
357 if (event_initialized(&w->name_event))
358 evtimer_del(&w->name_event);
359
360 if (event_initialized(&w->alerts_timer))
361 evtimer_del(&w->alerts_timer);
362 if (event_initialized(&w->offset_timer))
363 event_del(&w->offset_timer);
364
365 options_free(w->options);
366 free(w->fill_character);
367
368 free(w->name);
369 free(w);
370 }
371
372 int
373 window_pane_destroy_ready(struct window_pane *wp)
374 {
375 int n;
376
377 if (wp->pipe_fd != -1) {
378 if (EVBUFFER_LENGTH(wp->pipe_event->output) != 0)
379 return (0);
380 if (ioctl(wp->fd, FIONREAD, &n) != -1 && n > 0)
381 return (0);
382 }
383
384 if (~wp->flags & PANE_EXITED)
385 return (0);
386 return (1);
387 }
388
389 void
390 window_add_ref(struct window *w, const char *from)
391 {
392 w->references++;
393 log_debug("%s: @%u %s, now %d", __func__, w->id, from, w->references);
394 }
395
396 void
397 window_remove_ref(struct window *w, const char *from)
398 {
399 w->references--;
400 log_debug("%s: @%u %s, now %d", __func__, w->id, from, w->references);
401
402 if (w->references == 0)
403 window_destroy(w);
404 }
405
406 void
407 window_set_name(struct window *w, const char *new_name)
408 {
409 free(w->name);
410 utf8_stravis(&w->name, new_name, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
411 notify_window("window-renamed", w);
412 }
413
414 void
415 window_resize(struct window *w, u_int sx, u_int sy, int xpixel, int ypixel)
416 {
417 if (xpixel == 0)
418 xpixel = DEFAULT_XPIXEL;
419 if (ypixel == 0)
420 ypixel = DEFAULT_YPIXEL;
421
422 log_debug("%s: @%u resize %ux%u (%ux%u)", __func__, w->id, sx, sy,
423 xpixel == -1 ? w->xpixel : (u_int)xpixel,
424 ypixel == -1 ? w->ypixel : (u_int)ypixel);
425 w->sx = sx;
426 w->sy = sy;
427 if (xpixel != -1)
428 w->xpixel = xpixel;
429 if (ypixel != -1)
430 w->ypixel = ypixel;
431 }
432
433 void
434 window_pane_send_resize(struct window_pane *wp, u_int sx, u_int sy)
435 {
436 struct window *w = wp->window;
437 struct winsize ws;
438
439 if (wp->fd == -1)
440 return;
441
442 log_debug("%s: %%%u resize to %u,%u", __func__, wp->id, sx, sy);
443
444 memset(&ws, 0, sizeof ws);
445 ws.ws_col = sx;
446 ws.ws_row = sy;
447 ws.ws_xpixel = w->xpixel * ws.ws_col;
448 ws.ws_ypixel = w->ypixel * ws.ws_row;
449 if (ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
450 fatal("ioctl failed");
451 }
452
453 int
454 window_has_pane(struct window *w, struct window_pane *wp)
455 {
456 struct window_pane *wp1;
457
458 TAILQ_FOREACH(wp1, &w->panes, entry) {
459 if (wp1 == wp)
460 return (1);
461 }
462 return (0);
463 }
464
465 void
466 window_update_focus(struct window *w)
467 {
468 if (w != NULL) {
469 log_debug("%s: @%u", __func__, w->id);
470 window_pane_update_focus(w->active);
471 }
472 }
473
474 void
475 window_pane_update_focus(struct window_pane *wp)
476 {
477 struct client *c;
478 int focused = 0;
479
480 if (wp != NULL) {
481 if (wp != wp->window->active)
482 focused = 0;
483 else {
484 TAILQ_FOREACH(c, &clients, entry) {
485 if (c->session != NULL &&
486 c->session->attached != 0 &&
487 (c->flags & CLIENT_FOCUSED) &&
488 c->session->curw->window == wp->window) {
489 focused = 1;
490 break;
491 }
492 }
493 }
494 if (!focused && (wp->flags & PANE_FOCUSED)) {
495 log_debug("%s: %%%u focus out", __func__, wp->id);
496 if (wp->base.mode & MODE_FOCUSON)
497 bufferevent_write(wp->event, "\033[O", 3);
498 notify_pane("pane-focus-out", wp);
499 wp->flags &= ~PANE_FOCUSED;
500 } else if (focused && (~wp->flags & PANE_FOCUSED)) {
501 log_debug("%s: %%%u focus in", __func__, wp->id);
502 if (wp->base.mode & MODE_FOCUSON)
503 bufferevent_write(wp->event, "\033[I", 3);
504 notify_pane("pane-focus-in", wp);
505 wp->flags |= PANE_FOCUSED;
506 } else
507 log_debug("%s: %%%u focus unchanged", __func__, wp->id);
508 }
509 }
510
511 int
512 window_set_active_pane(struct window *w, struct window_pane *wp, int notify)
513 {
514 log_debug("%s: pane %%%u", __func__, wp->id);
515
516 if (wp == w->active)
517 return (0);
518 w->last = w->active;
519
520 w->active = wp;
521 w->active->active_point = next_active_point++;
522 w->active->flags |= PANE_CHANGED;
523
524 if (options_get_number(global_options, "focus-events")) {
525 window_pane_update_focus(w->last);
526 window_pane_update_focus(w->active);
527 }
528
529 tty_update_window_offset(w);
530
531 if (notify)
532 notify_window("window-pane-changed", w);
533 return (1);
534 }
535
536 static int
537 window_pane_get_palette(struct window_pane *wp, int c)
538 {
539 if (wp == NULL)
540 return (-1);
541 return (colour_palette_get(&wp->palette, c));
542 }
543
544 void
545 window_redraw_active_switch(struct window *w, struct window_pane *wp)
546 {
547 struct grid_cell *gc1, *gc2;
548 int c1, c2;
549
550 if (wp == w->active)
551 return;
552
553 for (;;) {
554 /*
555 * If the active and inactive styles or palettes are different,
556 * need to redraw the panes.
557 */
558 gc1 = &wp->cached_gc;
559 gc2 = &wp->cached_active_gc;
560 if (!grid_cells_look_equal(gc1, gc2))
561 wp->flags |= PANE_REDRAW;
562 else {
563 c1 = window_pane_get_palette(wp, gc1->fg);
564 c2 = window_pane_get_palette(wp, gc2->fg);
565 if (c1 != c2)
566 wp->flags |= PANE_REDRAW;
567 else {
568 c1 = window_pane_get_palette(wp, gc1->bg);
569 c2 = window_pane_get_palette(wp, gc2->bg);
570 if (c1 != c2)
571 wp->flags |= PANE_REDRAW;
572 }
573 }
574 if (wp == w->active)
575 break;
576 wp = w->active;
577 }
578 }
579
580 struct window_pane *
581 window_get_active_at(struct window *w, u_int x, u_int y)
582 {
583 struct window_pane *wp;
584
585 TAILQ_FOREACH(wp, &w->panes, entry) {
586 if (!window_pane_visible(wp))
587 continue;
588 if (x < wp->xoff || x > wp->xoff + wp->sx)
589 continue;
590 if (y < wp->yoff || y > wp->yoff + wp->sy)
591 continue;
592 return (wp);
593 }
594 return (NULL);
595 }
596
597 struct window_pane *
598 window_find_string(struct window *w, const char *s)
599 {
600 u_int x, y, top = 0, bottom = w->sy - 1;
601 int status;
602
603 x = w->sx / 2;
604 y = w->sy / 2;
605
606 status = options_get_number(w->options, "pane-border-status");
607 if (status == PANE_STATUS_TOP)
608 top++;
609 else if (status == PANE_STATUS_BOTTOM)
610 bottom--;
611
612 if (strcasecmp(s, "top") == 0)
613 y = top;
614 else if (strcasecmp(s, "bottom") == 0)
615 y = bottom;
616 else if (strcasecmp(s, "left") == 0)
617 x = 0;
618 else if (strcasecmp(s, "right") == 0)
619 x = w->sx - 1;
620 else if (strcasecmp(s, "top-left") == 0) {
621 x = 0;
622 y = top;
623 } else if (strcasecmp(s, "top-right") == 0) {
624 x = w->sx - 1;
625 y = top;
626 } else if (strcasecmp(s, "bottom-left") == 0) {
627 x = 0;
628 y = bottom;
629 } else if (strcasecmp(s, "bottom-right") == 0) {
630 x = w->sx - 1;
631 y = bottom;
632 } else
633 return (NULL);
634
635 return (window_get_active_at(w, x, y));
636 }
637
638 int
639 window_zoom(struct window_pane *wp)
640 {
641 struct window *w = wp->window;
642 struct window_pane *wp1;
643
644 if (w->flags & WINDOW_ZOOMED)
645 return (-1);
646
647 if (window_count_panes(w) == 1)
648 return (-1);
649
650 if (w->active != wp)
651 window_set_active_pane(w, wp, 1);
652
653 TAILQ_FOREACH(wp1, &w->panes, entry) {
654 wp1->saved_layout_cell = wp1->layout_cell;
655 wp1->layout_cell = NULL;
656 }
657
658 w->saved_layout_root = w->layout_root;
659 layout_init(w, wp);
660 w->flags |= WINDOW_ZOOMED;
661 notify_window("window-layout-changed", w);
662
663 return (0);
664 }
665
666 int
667 window_unzoom(struct window *w)
668 {
669 struct window_pane *wp;
670
671 if (!(w->flags & WINDOW_ZOOMED))
672 return (-1);
673
674 w->flags &= ~WINDOW_ZOOMED;
675 layout_free(w);
676 w->layout_root = w->saved_layout_root;
677 w->saved_layout_root = NULL;
678
679 TAILQ_FOREACH(wp, &w->panes, entry) {
680 wp->layout_cell = wp->saved_layout_cell;
681 wp->saved_layout_cell = NULL;
682 }
683 layout_fix_panes(w, NULL);
684 notify_window("window-layout-changed", w);
685
686 return (0);
687 }
688
689 int
690 window_push_zoom(struct window *w, int always, int flag)
691 {
692 log_debug("%s: @%u %d", __func__, w->id,
693 flag && (w->flags & WINDOW_ZOOMED));
694 if (flag && (always || (w->flags & WINDOW_ZOOMED)))
695 w->flags |= WINDOW_WASZOOMED;
696 else
697 w->flags &= ~WINDOW_WASZOOMED;
698 return (window_unzoom(w) == 0);
699 }
700
701 int
702 window_pop_zoom(struct window *w)
703 {
704 log_debug("%s: @%u %d", __func__, w->id,
705 !!(w->flags & WINDOW_WASZOOMED));
706 if (w->flags & WINDOW_WASZOOMED)
707 return (window_zoom(w->active) == 0);
708 return (0);
709 }
710
711 struct window_pane *
712 window_add_pane(struct window *w, struct window_pane *other, u_int hlimit,
713 int flags)
714 {
715 struct window_pane *wp;
716
717 if (other == NULL)
718 other = w->active;
719
720 wp = window_pane_create(w, w->sx, w->sy, hlimit);
721 if (TAILQ_EMPTY(&w->panes)) {
722 log_debug("%s: @%u at start", __func__, w->id);
723 TAILQ_INSERT_HEAD(&w->panes, wp, entry);
724 } else if (flags & SPAWN_BEFORE) {
725 log_debug("%s: @%u before %%%u", __func__, w->id, wp->id);
726 if (flags & SPAWN_FULLSIZE)
727 TAILQ_INSERT_HEAD(&w->panes, wp, entry);
728 else
729 TAILQ_INSERT_BEFORE(other, wp, entry);
730 } else {
731 log_debug("%s: @%u after %%%u", __func__, w->id, wp->id);
732 if (flags & SPAWN_FULLSIZE)
733 TAILQ_INSERT_TAIL(&w->panes, wp, entry);
734 else
735 TAILQ_INSERT_AFTER(&w->panes, other, wp, entry);
736 }
737 return (wp);
738 }
739
740 void
741 window_lost_pane(struct window *w, struct window_pane *wp)
742 {
743 log_debug("%s: @%u pane %%%u", __func__, w->id, wp->id);
744
745 if (wp == marked_pane.wp)
746 server_clear_marked();
747
748 if (wp == w->active) {
749 w->active = w->last;
750 w->last = NULL;
751 if (w->active == NULL) {
752 w->active = TAILQ_PREV(wp, window_panes, entry);
753 if (w->active == NULL)
754 w->active = TAILQ_NEXT(wp, entry);
755 }
756 if (w->active != NULL) {
757 w->active->flags |= PANE_CHANGED;
758 notify_window("window-pane-changed", w);
759 window_update_focus(w);
760 }
761 } else if (wp == w->last)
762 w->last = NULL;
763 }
764
765 void
766 window_remove_pane(struct window *w, struct window_pane *wp)
767 {
768 window_lost_pane(w, wp);
769
770 TAILQ_REMOVE(&w->panes, wp, entry);
771 window_pane_destroy(wp);
772 }
773
774 struct window_pane *
775 window_pane_at_index(struct window *w, u_int idx)
776 {
777 struct window_pane *wp;
778 u_int n;
779
780 n = options_get_number(w->options, "pane-base-index");
781 TAILQ_FOREACH(wp, &w->panes, entry) {
782 if (n == idx)
783 return (wp);
784 n++;
785 }
786 return (NULL);
787 }
788
789 struct window_pane *
790 window_pane_next_by_number(struct window *w, struct window_pane *wp, u_int n)
791 {
792 for (; n > 0; n--) {
793 if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
794 wp = TAILQ_FIRST(&w->panes);
795 }
796
797 return (wp);
798 }
799
800 struct window_pane *
801 window_pane_previous_by_number(struct window *w, struct window_pane *wp,
802 u_int n)
803 {
804 for (; n > 0; n--) {
805 if ((wp = TAILQ_PREV(wp, window_panes, entry)) == NULL)
806 wp = TAILQ_LAST(&w->panes, window_panes);
807 }
808
809 return (wp);
810 }
811
812 int
813 window_pane_index(struct window_pane *wp, u_int *i)
814 {
815 struct window_pane *wq;
816 struct window *w = wp->window;
817
818 *i = options_get_number(w->options, "pane-base-index");
819 TAILQ_FOREACH(wq, &w->panes, entry) {
820 if (wp == wq) {
821 return (0);
822 }
823 (*i)++;
824 }
825
826 return (-1);
827 }
828
829 u_int
830 window_count_panes(struct window *w)
831 {
832 struct window_pane *wp;
833 u_int n;
834
835 n = 0;
836 TAILQ_FOREACH(wp, &w->panes, entry)
837 n++;
838 return (n);
839 }
840
841 void
842 window_destroy_panes(struct window *w)
843 {
844 struct window_pane *wp;
845
846 while (!TAILQ_EMPTY(&w->panes)) {
847 wp = TAILQ_FIRST(&w->panes);
848 TAILQ_REMOVE(&w->panes, wp, entry);
849 window_pane_destroy(wp);
850 }
851 }
852
853 const char *
854 window_printable_flags(struct winlink *wl, int escape)
855 {
856 struct session *s = wl->session;
857 static char flags[32];
858 int pos;
859
860 pos = 0;
861 if (wl->flags & WINLINK_ACTIVITY) {
862 flags[pos++] = '#';
863 if (escape)
864 flags[pos++] = '#';
865 }
866 if (wl->flags & WINLINK_BELL)
867 flags[pos++] = '!';
868 if (wl->flags & WINLINK_SILENCE)
869 flags[pos++] = '~';
870 if (wl == s->curw)
871 flags[pos++] = '*';
872 if (wl == TAILQ_FIRST(&s->lastw))
873 flags[pos++] = '-';
874 if (server_check_marked() && wl == marked_pane.wl)
875 flags[pos++] = 'M';
876 if (wl->window->flags & WINDOW_ZOOMED)
877 flags[pos++] = 'Z';
878 flags[pos] = '\0';
879 return (flags);
880 }
881
882 struct window_pane *
883 window_pane_find_by_id_str(const char *s)
884 {
885 const char *errstr;
886 u_int id;
887
888 if (*s != '%')
889 return (NULL);
890
891 id = strtonum(s + 1, 0, UINT_MAX, &errstr);
892 if (errstr != NULL)
893 return (NULL);
894 return (window_pane_find_by_id(id));
895 }
896
897 struct window_pane *
898 window_pane_find_by_id(u_int id)
899 {
900 struct window_pane wp;
901
902 wp.id = id;
903 return (RB_FIND(window_pane_tree, &all_window_panes, &wp));
904 }
905
906 static struct window_pane *
907 window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
908 {
909 struct window_pane *wp;
910 char host[HOST_NAME_MAX + 1];
911
912 wp = xcalloc(1, sizeof *wp);
913 wp->window = w;
914 wp->options = options_create(w->options);
915 wp->flags = PANE_STYLECHANGED;
916
917 wp->id = next_window_pane_id++;
918 RB_INSERT(window_pane_tree, &all_window_panes, wp);
919
920 wp->fd = -1;
921
922 TAILQ_INIT(&wp->modes);
923
924 TAILQ_INIT (&wp->resize_queue);
925
926 wp->sx = sx;
927 wp->sy = sy;
928
929 wp->pipe_fd = -1;
930
931 colour_palette_init(&wp->palette);
932 colour_palette_from_option(&wp->palette, wp->options);
933
934 screen_init(&wp->base, sx, sy, hlimit);
935 wp->screen = &wp->base;
936
937 screen_init(&wp->status_screen, 1, 1, 0);
938
939 if (gethostname(host, sizeof host) == 0)
940 screen_set_title(&wp->base, host);
941
942 return (wp);
943 }
944
945 static void
946 window_pane_destroy(struct window_pane *wp)
947 {
948 struct window_pane_resize *r;
949 struct window_pane_resize *r1;
950
951 window_pane_reset_mode_all(wp);
952 free(wp->searchstr);
953
954 if (wp->fd != -1) {
955 bufferevent_free(wp->event);
956 close(wp->fd);
957 }
958 if (wp->ictx != NULL)
959 input_free(wp->ictx);
960
961 screen_free(&wp->status_screen);
962
963 screen_free(&wp->base);
964
965 if (wp->pipe_fd != -1) {
966 bufferevent_free(wp->pipe_event);
967 close(wp->pipe_fd);
968 }
969
970 if (event_initialized(&wp->resize_timer))
971 event_del(&wp->resize_timer);
972 TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
973 TAILQ_REMOVE(&wp->resize_queue, r, entry);
974 free(r);
975 }
976
977 RB_REMOVE(window_pane_tree, &all_window_panes, wp);
978
979 options_free(wp->options);
980 free((void *)wp->cwd);
981 free(wp->shell);
982 cmd_free_argv(wp->argc, wp->argv);
983 colour_palette_free(&wp->palette);
984 free(wp);
985 }
986
987 static void
988 window_pane_read_callback(__unused struct bufferevent *bufev, void *data)
989 {
990 struct window_pane *wp = data;
991 struct evbuffer *evb = wp->event->input;
992 struct window_pane_offset *wpo = &wp->pipe_offset;
993 size_t size = EVBUFFER_LENGTH(evb);
994 char *new_data;
995 size_t new_size;
996 struct client *c;
997
998 if (wp->pipe_fd != -1) {
999 new_data = window_pane_get_new_data(wp, wpo, &new_size);
1000 if (new_size > 0) {
1001 bufferevent_write(wp->pipe_event, new_data, new_size);
1002 window_pane_update_used_data(wp, wpo, new_size);
1003 }
1004 }
1005
1006 log_debug("%%%u has %zu bytes", wp->id, size);
1007 TAILQ_FOREACH(c, &clients, entry) {
1008 if (c->session != NULL && (c->flags & CLIENT_CONTROL))
1009 control_write_output(c, wp);
1010 }
1011 input_parse_pane(wp);
1012 bufferevent_disable(wp->event, EV_READ);
1013 }
1014
1015 static void
1016 window_pane_error_callback(__unused struct bufferevent *bufev,
1017 __unused short what, void *data)
1018 {
1019 struct window_pane *wp = data;
1020
1021 log_debug("%%%u error", wp->id);
1022 wp->flags |= PANE_EXITED;
1023
1024 if (window_pane_destroy_ready(wp))
1025 server_destroy_pane(wp, 1);
1026 }
1027
1028 void
1029 window_pane_set_event(struct window_pane *wp)
1030 {
1031 setblocking(wp->fd, 0);
1032
1033 wp->event = bufferevent_new(wp->fd, window_pane_read_callback,
1034 NULL, window_pane_error_callback, wp);
1035 wp->ictx = input_init(wp, wp->event, &wp->palette);
1036
1037 bufferevent_enable(wp->event, EV_READ|EV_WRITE);
1038 }
1039
1040 void
1041 window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
1042 {
1043 struct window_mode_entry *wme;
1044 struct window_pane_resize *r;
1045
1046 if (sx == wp->sx && sy == wp->sy)
1047 return;
1048
1049 r = xmalloc(sizeof *r);
1050 r->sx = sx;
1051 r->sy = sy;
1052 r->osx = wp->sx;
1053 r->osy = wp->sy;
1054 TAILQ_INSERT_TAIL (&wp->resize_queue, r, entry);
1055
1056 wp->sx = sx;
1057 wp->sy = sy;
1058
1059 log_debug("%s: %%%u resize %ux%u", __func__, wp->id, sx, sy);
1060 screen_resize(&wp->base, sx, sy, wp->base.saved_grid == NULL);
1061
1062 wme = TAILQ_FIRST(&wp->modes);
1063 if (wme != NULL && wme->mode->resize != NULL)
1064 wme->mode->resize(wme, sx, sy);
1065 }
1066
1067 int
1068 window_pane_set_mode(struct window_pane *wp, struct window_pane *swp,
1069 const struct window_mode *mode, struct cmd_find_state *fs,
1070 struct args *args)
1071 {
1072 struct window_mode_entry *wme;
1073
1074 if (!TAILQ_EMPTY(&wp->modes) && TAILQ_FIRST(&wp->modes)->mode == mode)
1075 return (1);
1076
1077 TAILQ_FOREACH(wme, &wp->modes, entry) {
1078 if (wme->mode == mode)
1079 break;
1080 }
1081 if (wme != NULL) {
1082 TAILQ_REMOVE(&wp->modes, wme, entry);
1083 TAILQ_INSERT_HEAD(&wp->modes, wme, entry);
1084 } else {
1085 wme = xcalloc(1, sizeof *wme);
1086 wme->wp = wp;
1087 wme->swp = swp;
1088 wme->mode = mode;
1089 wme->prefix = 1;
1090 TAILQ_INSERT_HEAD(&wp->modes, wme, entry);
1091 wme->screen = wme->mode->init(wme, fs, args);
1092 }
1093
1094 wp->screen = wme->screen;
1095 wp->flags |= (PANE_REDRAW|PANE_CHANGED);
1096
1097 server_redraw_window_borders(wp->window);
1098 server_status_window(wp->window);
1099 notify_pane("pane-mode-changed", wp);
1100
1101 return (0);
1102 }
1103
1104 void
1105 window_pane_reset_mode(struct window_pane *wp)
1106 {
1107 struct window_mode_entry *wme, *next;
1108
1109 if (TAILQ_EMPTY(&wp->modes))
1110 return;
1111
1112 wme = TAILQ_FIRST(&wp->modes);
1113 TAILQ_REMOVE(&wp->modes, wme, entry);
1114 wme->mode->free(wme);
1115 free(wme);
1116
1117 next = TAILQ_FIRST(&wp->modes);
1118 if (next == NULL) {
1119 log_debug("%s: no next mode", __func__);
1120 wp->screen = &wp->base;
1121 } else {
1122 log_debug("%s: next mode is %s", __func__, next->mode->name);
1123 wp->screen = next->screen;
1124 if (next->mode->resize != NULL)
1125 next->mode->resize(next, wp->sx, wp->sy);
1126 }
1127 wp->flags |= (PANE_REDRAW|PANE_CHANGED);
1128
1129 server_redraw_window_borders(wp->window);
1130 server_status_window(wp->window);
1131 notify_pane("pane-mode-changed", wp);
1132 }
1133
1134 void
1135 window_pane_reset_mode_all(struct window_pane *wp)
1136 {
1137 while (!TAILQ_EMPTY(&wp->modes))
1138 window_pane_reset_mode(wp);
1139 }
1140
1141 static void
1142 window_pane_copy_key(struct window_pane *wp, key_code key)
1143 {
1144 struct window_pane *loop;
1145
1146 TAILQ_FOREACH(loop, &wp->window->panes, entry) {
1147 if (loop != wp &&
1148 TAILQ_EMPTY(&loop->modes) &&
1149 loop->fd != -1 &&
1150 (~loop->flags & PANE_INPUTOFF) &&
1151 window_pane_visible(loop) &&
1152 options_get_number(loop->options, "synchronize-panes"))
1153 input_key_pane(loop, key, NULL);
1154 }
1155 }
1156
1157 int
1158 window_pane_key(struct window_pane *wp, struct client *c, struct session *s,
1159 struct winlink *wl, key_code key, struct mouse_event *m)
1160 {
1161 struct window_mode_entry *wme;
1162
1163 if (KEYC_IS_MOUSE(key) && m == NULL)
1164 return (-1);
1165
1166 wme = TAILQ_FIRST(&wp->modes);
1167 if (wme != NULL) {
1168 if (wme->mode->key != NULL && c != NULL) {
1169 key &= ~KEYC_MASK_FLAGS;
1170 wme->mode->key(wme, c, s, wl, key, m);
1171 }
1172 return (0);
1173 }
1174
1175 if (wp->fd == -1 || wp->flags & PANE_INPUTOFF)
1176 return (0);
1177
1178 if (input_key_pane(wp, key, m) != 0)
1179 return (-1);
1180
1181 if (KEYC_IS_MOUSE(key))
1182 return (0);
1183 if (options_get_number(wp->options, "synchronize-panes"))
1184 window_pane_copy_key(wp, key);
1185 return (0);
1186 }
1187
1188 int
1189 window_pane_visible(struct window_pane *wp)
1190 {
1191 if (~wp->window->flags & WINDOW_ZOOMED)
1192 return (1);
1193 return (wp == wp->window->active);
1194 }
1195
1196 u_int
1197 window_pane_search(struct window_pane *wp, const char *term, int regex,
1198 int ignore)
1199 {
1200 struct screen *s = &wp->base;
1201 regex_t r;
1202 char *new = NULL, *line;
1203 u_int i;
1204 int flags = 0, found;
1205 size_t n;
1206
1207 if (!regex) {
1208 if (ignore)
1209 flags |= FNM_CASEFOLD;
1210 xasprintf(&new, "*%s*", term);
1211 } else {
1212 if (ignore)
1213 flags |= REG_ICASE;
1214 if (regcomp(&r, term, flags|REG_EXTENDED) != 0)
1215 return (0);
1216 }
1217
1218 for (i = 0; i < screen_size_y(s); i++) {
1219 line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
1220 for (n = strlen(line); n > 0; n--) {
1221 if (!isspace((u_char)line[n - 1]))
1222 break;
1223 line[n - 1] = '\0';
1224 }
1225 log_debug("%s: %s", __func__, line);
1226 if (!regex)
1227 found = (fnmatch(new, line, flags) == 0);
1228 else
1229 found = (regexec(&r, line, 0, NULL, 0) == 0);
1230 free(line);
1231 if (found)
1232 break;
1233 }
1234 if (!regex)
1235 free(new);
1236 else
1237 regfree(&r);
1238
1239 if (i == screen_size_y(s))
1240 return (0);
1241 return (i + 1);
1242 }
1243
1244 /* Get MRU pane from a list. */
1245 static struct window_pane *
1246 window_pane_choose_best(struct window_pane **list, u_int size)
1247 {
1248 struct window_pane *next, *best;
1249 u_int i;
1250
1251 if (size == 0)
1252 return (NULL);
1253
1254 best = list[0];
1255 for (i = 1; i < size; i++) {
1256 next = list[i];
1257 if (next->active_point > best->active_point)
1258 best = next;
1259 }
1260 return (best);
1261 }
1262
1263 /*
1264 * Find the pane directly above another. We build a list of those adjacent to
1265 * top edge and then choose the best.
1266 */
1267 struct window_pane *
1268 window_pane_find_up(struct window_pane *wp)
1269 {
1270 struct window *w;
1271 struct window_pane *next, *best, **list;
1272 u_int edge, left, right, end, size;
1273 int status, found;
1274
1275 if (wp == NULL)
1276 return (NULL);
1277 w = wp->window;
1278 status = options_get_number(w->options, "pane-border-status");
1279
1280 list = NULL;
1281 size = 0;
1282
1283 edge = wp->yoff;
1284 if (status == PANE_STATUS_TOP) {
1285 if (edge == 1)
1286 edge = w->sy + 1;
1287 } else if (status == PANE_STATUS_BOTTOM) {
1288 if (edge == 0)
1289 edge = w->sy;
1290 } else {
1291 if (edge == 0)
1292 edge = w->sy + 1;
1293 }
1294
1295 left = wp->xoff;
1296 right = wp->xoff + wp->sx;
1297
1298 TAILQ_FOREACH(next, &w->panes, entry) {
1299 if (next == wp)
1300 continue;
1301 if (next->yoff + next->sy + 1 != edge)
1302 continue;
1303 end = next->xoff + next->sx - 1;
1304
1305 found = 0;
1306 if (next->xoff < left && end > right)
1307 found = 1;
1308 else if (next->xoff >= left && next->xoff <= right)
1309 found = 1;
1310 else if (end >= left && end <= right)
1311 found = 1;
1312 if (!found)
1313 continue;
1314 list = xreallocarray(list, size + 1, sizeof *list);
1315 list[size++] = next;
1316 }
1317
1318 best = window_pane_choose_best(list, size);
1319 free(list);
1320 return (best);
1321 }
1322
1323 /* Find the pane directly below another. */
1324 struct window_pane *
1325 window_pane_find_down(struct window_pane *wp)
1326 {
1327 struct window *w;
1328 struct window_pane *next, *best, **list;
1329 u_int edge, left, right, end, size;
1330 int status, found;
1331
1332 if (wp == NULL)
1333 return (NULL);
1334 w = wp->window;
1335 status = options_get_number(w->options, "pane-border-status");
1336
1337 list = NULL;
1338 size = 0;
1339
1340 edge = wp->yoff + wp->sy + 1;
1341 if (status == PANE_STATUS_TOP) {
1342 if (edge >= w->sy)
1343 edge = 1;
1344 } else if (status == PANE_STATUS_BOTTOM) {
1345 if (edge >= w->sy - 1)
1346 edge = 0;
1347 } else {
1348 if (edge >= w->sy)
1349 edge = 0;
1350 }
1351
1352 left = wp->xoff;
1353 right = wp->xoff + wp->sx;
1354
1355 TAILQ_FOREACH(next, &w->panes, entry) {
1356 if (next == wp)
1357 continue;
1358 if (next->yoff != edge)
1359 continue;
1360 end = next->xoff + next->sx - 1;
1361
1362 found = 0;
1363 if (next->xoff < left && end > right)
1364 found = 1;
1365 else if (next->xoff >= left && next->xoff <= right)
1366 found = 1;
1367 else if (end >= left && end <= right)
1368 found = 1;
1369 if (!found)
1370 continue;
1371 list = xreallocarray(list, size + 1, sizeof *list);
1372 list[size++] = next;
1373 }
1374
1375 best = window_pane_choose_best(list, size);
1376 free(list);
1377 return (best);
1378 }
1379
1380 /* Find the pane directly to the left of another. */
1381 struct window_pane *
1382 window_pane_find_left(struct window_pane *wp)
1383 {
1384 struct window *w;
1385 struct window_pane *next, *best, **list;
1386 u_int edge, top, bottom, end, size;
1387 int found;
1388
1389 if (wp == NULL)
1390 return (NULL);
1391 w = wp->window;
1392
1393 list = NULL;
1394 size = 0;
1395
1396 edge = wp->xoff;
1397 if (edge == 0)
1398 edge = w->sx + 1;
1399
1400 top = wp->yoff;
1401 bottom = wp->yoff + wp->sy;
1402
1403 TAILQ_FOREACH(next, &w->panes, entry) {
1404 if (next == wp)
1405 continue;
1406 if (next->xoff + next->sx + 1 != edge)
1407 continue;
1408 end = next->yoff + next->sy - 1;
1409
1410 found = 0;
1411 if (next->yoff < top && end > bottom)
1412 found = 1;
1413 else if (next->yoff >= top && next->yoff <= bottom)
1414 found = 1;
1415 else if (end >= top && end <= bottom)
1416 found = 1;
1417 if (!found)
1418 continue;
1419 list = xreallocarray(list, size + 1, sizeof *list);
1420 list[size++] = next;
1421 }
1422
1423 best = window_pane_choose_best(list, size);
1424 free(list);
1425 return (best);
1426 }
1427
1428 /* Find the pane directly to the right of another. */
1429 struct window_pane *
1430 window_pane_find_right(struct window_pane *wp)
1431 {
1432 struct window *w;
1433 struct window_pane *next, *best, **list;
1434 u_int edge, top, bottom, end, size;
1435 int found;
1436
1437 if (wp == NULL)
1438 return (NULL);
1439 w = wp->window;
1440
1441 list = NULL;
1442 size = 0;
1443
1444 edge = wp->xoff + wp->sx + 1;
1445 if (edge >= w->sx)
1446 edge = 0;
1447
1448 top = wp->yoff;
1449 bottom = wp->yoff + wp->sy;
1450
1451 TAILQ_FOREACH(next, &w->panes, entry) {
1452 if (next == wp)
1453 continue;
1454 if (next->xoff != edge)
1455 continue;
1456 end = next->yoff + next->sy - 1;
1457
1458 found = 0;
1459 if (next->yoff < top && end > bottom)
1460 found = 1;
1461 else if (next->yoff >= top && next->yoff <= bottom)
1462 found = 1;
1463 else if (end >= top && end <= bottom)
1464 found = 1;
1465 if (!found)
1466 continue;
1467 list = xreallocarray(list, size + 1, sizeof *list);
1468 list[size++] = next;
1469 }
1470
1471 best = window_pane_choose_best(list, size);
1472 free(list);
1473 return (best);
1474 }
1475
1476 /* Clear alert flags for a winlink */
1477 void
1478 winlink_clear_flags(struct winlink *wl)
1479 {
1480 struct winlink *loop;
1481
1482 wl->window->flags &= ~WINDOW_ALERTFLAGS;
1483 TAILQ_FOREACH(loop, &wl->window->winlinks, wentry) {
1484 if ((loop->flags & WINLINK_ALERTFLAGS) != 0) {
1485 loop->flags &= ~WINLINK_ALERTFLAGS;
1486 server_status_session(loop->session);
1487 }
1488 }
1489 }
1490
1491 /* Shuffle window indexes up. */
1492 int
1493 winlink_shuffle_up(struct session *s, struct winlink *wl, int before)
1494 {
1495 int idx, last;
1496
1497 if (wl == NULL)
1498 return (-1);
1499 if (before)
1500 idx = wl->idx;
1501 else
1502 idx = wl->idx + 1;
1503
1504 /* Find the next free index. */
1505 for (last = idx; last < INT_MAX; last++) {
1506 if (winlink_find_by_index(&s->windows, last) == NULL)
1507 break;
1508 }
1509 if (last == INT_MAX)
1510 return (-1);
1511
1512 /* Move everything from last - 1 to idx up a bit. */
1513 for (; last > idx; last--) {
1514 wl = winlink_find_by_index(&s->windows, last - 1);
1515 RB_REMOVE(winlinks, &s->windows, wl);
1516 wl->idx++;
1517 RB_INSERT(winlinks, &s->windows, wl);
1518 }
1519
1520 return (idx);
1521 }
1522
1523 static void
1524 window_pane_input_callback(struct client *c, __unused const char *path,
1525 int error, int closed, struct evbuffer *buffer, void *data)
1526 {
1527 struct window_pane_input_data *cdata = data;
1528 struct window_pane *wp;
1529 u_char *buf = EVBUFFER_DATA(buffer);
1530 size_t len = EVBUFFER_LENGTH(buffer);
1531
1532 wp = window_pane_find_by_id(cdata->wp);
1533 if (wp == NULL || closed || error != 0 || (c->flags & CLIENT_DEAD)) {
1534 if (wp == NULL)
1535 c->flags |= CLIENT_EXIT;
1536
1537 evbuffer_drain(buffer, len);
1538 cmdq_continue(cdata->item);
1539
1540 server_client_unref(c);
1541 free(cdata);
1542 return;
1543 }
1544 input_parse_buffer(wp, buf, len);
1545 evbuffer_drain(buffer, len);
1546 }
1547
1548 int
1549 window_pane_start_input(struct window_pane *wp, struct cmdq_item *item,
1550 char **cause)
1551 {
1552 struct client *c = cmdq_get_client(item);
1553 struct window_pane_input_data *cdata;
1554
1555 if (~wp->flags & PANE_EMPTY) {
1556 *cause = xstrdup("pane is not empty");
1557 return (-1);
1558 }
1559 if (c->flags & (CLIENT_DEAD|CLIENT_EXITED))
1560 return (1);
1561 if (c->session != NULL)
1562 return (1);
1563
1564 cdata = xmalloc(sizeof *cdata);
1565 cdata->item = item;
1566 cdata->wp = wp->id;
1567
1568 c->references++;
1569 file_read(c, "-", window_pane_input_callback, cdata);
1570
1571 return (0);
1572 }
1573
1574 void *
1575 window_pane_get_new_data(struct window_pane *wp,
1576 struct window_pane_offset *wpo, size_t *size)
1577 {
1578 size_t used = wpo->used - wp->base_offset;
1579
1580 *size = EVBUFFER_LENGTH(wp->event->input) - used;
1581 return (EVBUFFER_DATA(wp->event->input) + used);
1582 }
1583
1584 void
1585 window_pane_update_used_data(struct window_pane *wp,
1586 struct window_pane_offset *wpo, size_t size)
1587 {
1588 size_t used = wpo->used - wp->base_offset;
1589
1590 if (size > EVBUFFER_LENGTH(wp->event->input) - used)
1591 size = EVBUFFER_LENGTH(wp->event->input) - used;
1592 wpo->used += size;
1593 }
1594
1595 void
1596 window_set_fill_character(struct window *w)
1597 {
1598 const char *value;
1599 struct utf8_data *ud;
1600
1601 free(w->fill_character);
1602 w->fill_character = NULL;
1603
1604 value = options_get_string(w->options, "fill-character");
1605 if (*value != '\0' && utf8_isvalid(value)) {
1606 ud = utf8_fromcstr(value);
1607 if (ud != NULL && ud[0].width == 1)
1608 w->fill_character = ud;
1609 }
1610 }